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javax.swing.text.html
public static class: StyleSheet.BoxPainter [javadoc | source]

java.lang.Object
   javax.swing.text.html.StyleSheet$BoxPainter

All Implemented Interfaces:
    Serializable

Class to carry out some of the duties of CSS formatting. Implementations of this class enable views to present the CSS formatting while not knowing anything about how the CSS values are being cached.

As a delegate of Views, this object is responsible for the insets of a View and making sure the background is maintained according to the CSS attributes.

Nested Class Summary:
static enum class	BoxPainter.HorizontalMargin

Field Summary
float	topMargin
float	bottomMargin
float	leftMargin
float	rightMargin
short	marginFlags
Border	border
Insets	binsets
CSS	css
StyleSheet	ss
Color	bg
StyleSheet.BackgroundImagePainter	bgPainter

Constructor:

BoxPainter(AttributeSet a, CSS css, StyleSheet ss) { this.ss = ss; this.css = css; border = getBorder(a); binsets = border.getBorderInsets(null); topMargin = getLength(CSS.Attribute.MARGIN_TOP, a); bottomMargin = getLength(CSS.Attribute.MARGIN_BOTTOM, a); leftMargin = getLength(CSS.Attribute.MARGIN_LEFT, a); rightMargin = getLength(CSS.Attribute.MARGIN_RIGHT, a); bg = ss.getBackground(a); if (ss.getBackgroundImage(a) != null) { bgPainter = new BackgroundImagePainter(a, css, ss); } }

Method from javax.swing.text.html.StyleSheet$BoxPainter Summary:
getBorder,   getBorderColor,   getInset,   getLength,   getOrientationMargin,   isLeftToRight,   isOrientationAware,   paint

Methods from java.lang.Object:
clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait

Method from javax.swing.text.html.StyleSheet$BoxPainter Detail:
Border getBorder(AttributeSet a) { return new CSSBorder(a); } Fetches a border to render for the given attributes. PENDING(prinz) This is pretty badly hacked at the moment.
Color getBorderColor(AttributeSet a) { Color color = css.getColor(a, CSS.Attribute.BORDER_COLOR); if (color == null) { color = css.getColor(a, CSS.Attribute.COLOR); if (color == null) { return Color.black; } } return color; } Fetches the color to use for borders. This will either be the value specified by the border-color attribute (which is not inherited), or it will default to the color attribute (which is inherited).
public float getInset(int side, View v) { AttributeSet a = v.getAttributes(); float inset = 0; switch(side) { case View.LEFT: inset += getOrientationMargin(HorizontalMargin.LEFT, leftMargin, a, isLeftToRight(v)); inset += binsets.left; inset += getLength(CSS.Attribute.PADDING_LEFT, a); break; case View.RIGHT: inset += getOrientationMargin(HorizontalMargin.RIGHT, rightMargin, a, isLeftToRight(v)); inset += binsets.right; inset += getLength(CSS.Attribute.PADDING_RIGHT, a); break; case View.TOP: inset += topMargin; inset += binsets.top; inset += getLength(CSS.Attribute.PADDING_TOP, a); break; case View.BOTTOM: inset += bottomMargin; inset += binsets.bottom; inset += getLength(CSS.Attribute.PADDING_BOTTOM, a); break; default: throw new IllegalArgumentException("Invalid side: " + side); } return inset; } Fetches the inset needed on a given side to account for the margin, border, and padding.
float getLength(CSS.Attribute key, AttributeSet a) { return css.getLength(a, key, ss); }
float getOrientationMargin(StyleSheet.BoxPainter.HorizontalMargin side, float cssMargin, AttributeSet a, boolean isLeftToRight) { float margin = cssMargin; float orientationMargin = cssMargin; Object cssMarginValue = null; switch (side) { case RIGHT: { orientationMargin = (isLeftToRight) ? getLength(CSS.Attribute.MARGIN_RIGHT_LTR, a) : getLength(CSS.Attribute.MARGIN_RIGHT_RTL, a); cssMarginValue = a.getAttribute(CSS.Attribute.MARGIN_RIGHT); } break; case LEFT : { orientationMargin = (isLeftToRight) ? getLength(CSS.Attribute.MARGIN_LEFT_LTR, a) : getLength(CSS.Attribute.MARGIN_LEFT_RTL, a); cssMarginValue = a.getAttribute(CSS.Attribute.MARGIN_LEFT); } break; } if (cssMarginValue == null && orientationMargin != Integer.MIN_VALUE) { margin = orientationMargin; } return margin; } for , , etc. margins are Left-To-Right/Right-To-Left depended. see 5088268 for more details margin-(left|right)-(ltr|rtl) were introduced to describe it if margin-(left|right) is present we are to use it.
static boolean isLeftToRight(View v) { boolean ret = true; if (isOrientationAware(v)) { Container container = null; if (v != null && (container = v.getContainer()) != null) { ret = container.getComponentOrientation().isLeftToRight(); } } return ret; }
static boolean isOrientationAware(View v) { boolean ret = false; AttributeSet attr = null; Object obj = null; if (v != null && (attr = v.getElement().getAttributes()) != null && (obj = attr.getAttribute(StyleConstants.NameAttribute)) instanceof HTML.Tag && (obj == HTML.Tag.DIR || obj == HTML.Tag.MENU || obj == HTML.Tag.UL || obj == HTML.Tag.OL)) { ret = true; } return ret; }
public void paint(Graphics g, float x, float y, float w, float h, View v) { // PENDING(prinz) implement real rendering... which would // do full set of border and background capabilities. // remove margin float dx = 0; float dy = 0; float dw = 0; float dh = 0; AttributeSet a = v.getAttributes(); boolean isLeftToRight = isLeftToRight(v); float localLeftMargin = getOrientationMargin(HorizontalMargin.LEFT, leftMargin, a, isLeftToRight); float localRightMargin = getOrientationMargin(HorizontalMargin.RIGHT, rightMargin, a, isLeftToRight); if (!(v instanceof HTMLEditorKit.HTMLFactory.BodyBlockView)) { dx = localLeftMargin; dy = topMargin; dw = -(localLeftMargin + localRightMargin); dh = -(topMargin + bottomMargin); } if (bg != null) { g.setColor(bg); g.fillRect((int) (x + dx), (int) (y + dy), (int) (w + dw), (int) (h + dh)); } if (bgPainter != null) { bgPainter.paint(g, x + dx, y + dy, w + dw, h + dh, v); } x += localLeftMargin; y += topMargin; w -= localLeftMargin + localRightMargin; h -= topMargin + bottomMargin; if (border instanceof BevelBorder) { //BevelBorder does not support border width int bw = (int) getLength(CSS.Attribute.BORDER_TOP_WIDTH, a); for (int i = bw - 1; i >= 0; i--) { border.paintBorder(null, g, (int) x + i, (int) y + i, (int) w - 2 * i, (int) h - 2 * i); } } else { border.paintBorder(null, g, (int) x, (int) y, (int) w, (int) h); } } Paints the CSS box according to the attributes given. This should paint the border, padding, and background.